Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028K9P |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B227111; IG Circuit Short to Ground; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ] |
DTC
|
B227111
|
IG Circuit Short to Ground
|
DESCRIPTION
This DTC is stored when a malfunction in the IG drive circuit or IG hold circuit of the certification ECU (smart key ECU assembly) or a malfunction in the IG output circuit between the output terminal of the certification ECU (smart key ECU assembly) and IG relay is detected.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
Note
|
B227111
|
IG Circuit Short to Ground
|
When either of the following conditions is met (1-trip detection logic*1):
-
The IG circuit of the certification ECU (smart key ECU assembly) is malfunctioning.*2
-
The IG hold circuit of the certification ECU (smart key ECU assembly) is malfunctioning.*3
-
There is a malfunction in a circuit outside of the certification ECU (smart key ECU assembly) circuit
|
-
Certification ECU (smart key ECU assembly)
-
Wire harness or connector
-
Power distribution box assembly
|
DTC Output Confirmation Operation:
-
Turn the ignition switch to ON.
|
-
*1: Only detected while a malfunction is present and the ignition switch is ON.
-
*2: The IG circuit and IG hold circuit activate the IG relay.
-
*3: After the IG circuit turns on, even if the certification ECU (smart key ECU assembly) malfunctions, the IG hold circuit will maintain the power source mode in ON.
Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected
|
Fail-safe Function when Malfunction Detected
|
The ignition switch cannot be turned to ON (the engine cannot be started).
|
The power source mode cannot be changed to ON.
|
Related Data List and Active Test Items
DTC No.
|
Data List and Active Test
|
B227111
|
Power Source Control
-
IGP Relay Circuit (Outside) Monitor
-
IGR Relay Circuit (Outside) Monitor
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
PROCEDURE
1.
|
CHECK HARNESS AND CONNECTOR (POWER SOURCE)
|
(a) Disconnect the I167 certification ECU (smart key ECU assembly) connector.
|
|
*a
|
Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly))
|
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
I167-6 (+B) - Body ground
|
Ignition switch off
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE
|
OK
|
|
|
2.
|
CHECK HARNESS AND CONNECTOR (GROUND)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
I167-29 (E) - Body ground
|
Always
|
Below 1 Ω
|
|
|
*a
|
Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly))
|
|
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) AND BODY GROUND)
|
(a) Disconnect the O175 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the 8D power distribution box assembly connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
8D-16 - O175-24 (IGPD)
|
Always
|
Below 1 Ω
|
8D-17 - O175-11 (IGRD)
|
Always
|
Below 1 Ω
|
8D-16 or O175-24 (IGPD) - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
8D-17 or O175-11 (IGRD) - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
CHECK POWER DISTRIBUTION BOX ASSEMBLY
|
(a) Disconnect the 8F power distribution box assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
8D-16 - 8F-11
|
Always
|
Below 1 Ω
|
8D-16 or 8F-11 - Other terminals
|
Always
|
10 kΩ or higher
|
Result
|
Proceed to
|
OK (for M20A-FKS)
|
A
|
OK (for G16E-GTS)
|
B
|
NG
|
C
|
A
|
|
|
5.
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CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - IGP RELAY)
|
(a) Remove the IGP-MAIN relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
8F-11 - No. 1 engine room relay block and No. 1 junction block assembly IGP-MAIN relay terminal 2
|
Always
|
Below 1 Ω
|
8F-11 or No. 1 engine room relay block and No. 1 junction block assembly IGP-MAIN relay terminal 2 - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
6.
|
INSPECT IGP-MAIN RELAY
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
3 - 5
|
Auxiliary battery voltage applied between terminals 1 and 2
|
Below 1 Ω
|
Auxiliary battery voltage not applied between terminals 1 and 2
|
10 kΩ or higher
|
|
|
NG |
|
REPLACE IGP RELAY
|
OK
|
|
|
7.
|
CHECK POWER DISTRIBUTION BOX ASSEMBLY
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
8D-17 - 8A-8
|
Always
|
20 Ω or higher
|
8D-17 - 8D-8
|
Always
|
20 Ω or higher
|
8D-17 or 8A-8 - Other terminals
|
Always
|
10 kΩ or higher
|
8D-17 or 8D-8 - Other terminals
|
Always
|
10 kΩ or higher
|
8.
|
CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - NO. 1 INTEGRATION RELAY - BODY GROUND)
|
(a) Disconnect the 9A No. 1 integration relay connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
8F-11 - 9A-7
|
Always
|
Below 1 Ω
|
8F-11 or 9A-7 - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
9A-8 - Body ground
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
9.
|
INSPECT NO. 1 INTEGRATION RELAY
|
Click here
|